just a couple of points that weren't in OP.
Electrum is newbie friendly but at the same time it is flexible to be used in a more advanced way. for example there are a lot of additional tabs, some of which are best be enabled. for example in this part:
To see your Bitcoin address, select "Receive" tab. If someone wants to send you some bitcoin then the only thing you have to do is to copy "Receiving address". It might change after someone sends money to that address but don't worry. You can reuse your previous addresses.
if you enable the Address tab it is better in my opinion. you can see all your addresses in one place and even add a label for each of them.
also in the Receive tab the "Payment Request" option is always confusing for newbies so enabling Address tab and using that may be a better option in my opinion.
Sending Bitcoin is fairly easy. Paste the address to which you would like to send BTC in "Pay to" field and enter the amount below. "Description" isn't broadcasted anywhere, you can use it to label transactions. The slider at the bottom indicates the fee for sending a transaction. Electrum automatically selects a proper fee to get your transaction confirmed in the next few blocks.
i find it best to enable "Edit fees manually" from preference so that i can see how much i am paying and type in the fee amount, specially in new version there is a satoshi/byte option which i can fill instead of a fixed total fee.
additionally the "replace by fee" option is best to be enabled although i believe it is enabled by default in the new version. this will help you to easily bump the fee if it was needed.
and finally the "Preview" button is what i always use. i have never actually clicked Send right away! i always preview my transaction, double check everything and then sign and broadcast.
