Welcome mate, another fellow brummie here
As Tom said, once the milder weather arrives there should be plenty of rides and opportunities to meet fellow bikers.
I literally had no mates with bikes when I passed two years ago, got loads now !!
Take it easy, don't try and do too much too soon is my advice, also say hi in the madlanders section towards the bottom as that's where any rides etc will be announced.
There is a camping / biking weekend at the end of April in Shropshire if you fancy it, good place to meet people.