Which exchange to buy Ripple, IOTA, cryptos

[Levieth02ng]

Hi

I live in the UK and am new to cryptocurrency. I want to get started in buying cryptocurrency for investment purpose not trading. For eg i want to buy a cryptocurrency then hold onto it for some time if the price goes up and i make a profit i will sell.

Im not sure which is the best way to do this. I want to buy other coins such as Riple, IOTA etc. Not Bitcoin, but i see a lot of people saying that you have to buy Bitcoin first and then use that to buy Ripple, is this correct ?.

Can i not just use UK £ to buy Ripple and then sit on it for some time and then sell it back to £.

If i can then which cryptocurrency exchanges should i sign up with?

So far i have just signed up with Blockchain just to get a virtual wallet.

Thanks in advance