Homeless??

I want to move to london in the autumn time from Ireland but I’ve no idea how it would work or who I would stay with as I’ve never moved to a different home before..

Can somebody help me wit what to do and where to stay, how much is rent and all that

I can imagine myself living there but I’m just nervous that I’ll be homeless for a while there or sleeping on someone’s couch (probably as a burden

Also how do I meet new friends, or people that I could move in with

Any advice people have got I will welcome it gladly xx