Hello guys,
My OH and I have just been given an allotment

Just waiting for them to send the confirmation through so we can get started clearing, marking out etc
Firstly, just wanted to say that over the last few days I have spent hours reading all the different posts, making notes and trying to take in all the info - this forum has been such a learning life line for me - so thanks!

I want to grow strawberries but really have no idea where to start and all the advice on here and on line has so many 'terms' (I'll let you know what terms) that I don't understand making me feel really daunted by them and I was wondering if someone could advise me on the basics.
I have allocated a 2m by 2m bed for them which I plan to have as a raised bed for drainage purposes is this enough? And given the space how many plants should be in that space?
I got some info from the RHS website which said not to plant the runners (I have no idea what a runner is do you have to start off with runners or can you just buy a strawberry plant?) until August, but looking on here a lot of people are saying that they have just got their strawberries and have potted them up. Can I get some now?
If I can get them now when do I plant them into the ground?
The other 'terms' I didn't understand were "humus in the soil" and "plant with the crown above the soil"?
If I got plants/runners now - when would they fruit.
I realise that is a lot of questions but this is the only crop that I do not seem to be able to understand how to grow.
Any advice would be greatly appreciated.