Hi and welcome from Shropshire.
Where in mid Wales there are a couple of bothies that might give you a more gentle intro to wild camping.
Hi and thanks barewirewalker.
I live near Lampeter in Ceredigion, and yes a few bothies nearby. I heard they get busy outside of winter though so advice was to bring a tent in-case the one you choose is full, not sure though. I'm saving for a tent, so hopefully I can get started when the warmer weather returns.