MyMonero is another official wallet by Monero, and the good thing is that it is on the lighter side of things.

It means you need not download the whole blockchain to use this wallet and you can simply start with MyMonero right away as it is a web wallet.

However, I want to leave you with a note of caution by the Monero team:

MyMonero is a web-based interface that allows you to use Monero without running a full Monero node. However, because this convenience comes at a cost: it is extremely difficult for MyMonero to securely deliver its code to your browser. This means that there is considerable risk in using MyMonero for large amounts! It is recommended that you treat MyMonero as you would treat your actual wallet, and not store very large amounts in it. For long-term storage of Monero, you should create a cold wallet using MoneroAddress or similar.