Here is a selection of different tutorials on how to buy specific altcoins in Angola:
How to buy NEM (XEM) in Angola
How to buy EOS (EOS) in Angola
How to buy Cosmos (ATOM) in Angola
How to buy IOTA (MIOTA) in Angola
How to buy Polkadot (DOT) in Angola
How to buy Cardano (ADA) in Angola
How to buy Filecoin (FIL) in Angola
How to buy Binance Coin (BNB) in Angola
How to buy Dash (DASH) in Angola
How to buy Dai (DAI) in Angola
How to buy Litecoin (LTC) in Angola
How to buy OKB (OKB) in Angola
How to buy NEO (NEO) in Angola
How to buy Ripple (XRP) in Angola
How to buy Stellar (XLM) in Angola
How to buy USD Coin (USDC) in Angola
How to buy Huobi Token (HT) in Angola
How to buy Wrapped Bitcoin (WBTC) in Angola
How to buy Crypto.com Coin (CRO) in Angola
How to buy cDAI (CDAI) in Angola
How to buy Bitcoin SV (BSV) in Angola
How to buy LEO Token (LEO) in Angola
How to buy Bitcoin Cash (BCH) in Angola
How to buy Binance USD (BUSD) in Angola
How to buy Monero (XMR) in Angola
How to buy Tether (USDT) in Angola
How to buy Tezos (XTZ) in Angola
How to buy TRON (TRX) in Angola
Some relevant Information about the definition of cryptocurrencies on Wikipedia:
According to Jan Lansky, a cryptocurrency is a system that meets six conditions:
In March 2018, the word cryptocurrency was added to the Merriam-Webster Dictionary.
Tokens, cryptocurrencies, and other types of digital assets that are not bitcoin are collectively known as alternative cryptocurrencies, typically shortened to “altcoins” or “alt coins”. Paul Vigna of The Wall Street Journal also described altcoins as “alternative versions of bitcoin” given its role as the model protocol for altcoin designers. The term is commonly used to describe coins and tokens created after bitcoin. The list of such cryptocurrencies can be found in the List of cryptocurrencies article.
Altcoins often have underlying differences with bitcoin. For example, Litecoin aims to process a block every 2.5 minutes, rather than bitcoin's 10 minutes which allows Litecoin to confirm transactions faster than bitcoin. Another example is Ethereum, which has smart contract functionality that allows decentralized applications to be run on its blockchain. Ethereum is the most-actively used blockchain in the world according to Bloomberg News and has the largest “following” of any altcoins according to the New York Times.
Significant rallies across altcoin markets are often referred to as an “altseason”.
A blockchain account can provide functions other than making payments, for example in decentralized applications or smart contracts. In this case, the units or coins are sometimes referred to as crypto tokens (or cryptotokens). Cryptocurrencies are generally generated by their own blockchain like Bitcoin and Litecoin whereas tokens are usually issued within a smart contract running on top of a blockchain such as Ethereum.
And more about cryptocurrencies in general:
A cryptocurrency (or crypto currency or crypto for short) is a digital asset designed to work as a medium of exchange wherein individual coin ownership records are stored in a ledger existing in a form of computerized database using strong cryptography to secure transaction records, to control the creation of additional coins, and to verify the transfer of coin ownership. It typically does not exist in physical form (like paper money) and is typically not issued by a central authority. Cryptocurrencies typically use decentralized control as opposed to centralized digital currency and central banking systems. When a cryptocurrency is minted or created prior to issuance or issued by a single issuer, it is generally considered centralized. When implemented with decentralized control, each cryptocurrency works through distributed ledger technology, typically a blockchain, that serves as a public financial transaction database.
Bitcoin, first released as open-source software in 2009, is the first decentralized cryptocurrency. Since the release of bitcoin, other cryptocurrencies have been created.Cryptocurrencies on Wikipedia (Source)
And for more information about Angola you can now read an excerpt of Wikipedia:
Angola (; Portuguese: [ɐ̃ˈɡɔlɐ]), officially the Republic of Angola (Portuguese: República de Angola), is a country in the west coast of Southern Africa. It is the second largest lusophone (Portuguese-speaking) country in both total area and population (behind Brazil), and it is the seventh-largest country in Africa, bordered by Namibia to the south, the Democratic Republic of the Congo to the north, Zambia to the east, and the Atlantic Ocean to the west. Angola has an exclave province, the province of Cabinda that borders the Republic of the Congo and the Democratic Republic of the Congo. The capital and largest city is Luanda.
Angola has been inhabited since the Paleolithic Age. Its formation as a nation state originates from Portuguese colonisation, which initially began with coastal settlements and trading posts founded in the 16th century. In the 19th century, European settlers gradually began to establish themselves in the interior. The Portuguese colony that became Angola did not have its present borders until the early 20th century, owing to resistance by native groups such as the Cuamato, the Kwanyama and the Mbunda.
After a protracted anti-colonial struggle, Angola achieved independence in 1975 as a Marxist–Leninist one-party republic. The country descended into a devastating civil war the same year, between the ruling People's Movement for the Liberation of Angola (MPLA), backed by the Soviet Union and Cuba, and the insurgent anti-communist National Union for the Total Independence of Angola (UNITA), supported by the United States and South Africa. Following the end of the war in 2002, Angola emerged as a relatively stable unitary, presidential constitutional republic.
Angola has vast mineral and petroleum reserves, and its economy is among the fastest-growing in the world, especially since the end of the civil war. However, economic growth is highly uneven, with most of the nation's wealth concentrated in a disproportionately small sector of the population. The standard of living remains low for most Angolans; life expectancy is among the lowest in the world, while infant mortality is among the highest.
Angola is a member of the United Nations, OPEC, African Union, the Community of Portuguese Language Countries, and the Southern African Development Community. Its population of 25.8 million is multicultural and multiethnic. Angolan culture reflects centuries of Portuguese rule, namely the predominance of the Portuguese language and of the Catholic Church, intermingled with a variety of indigenous customs and traditions.Source