Welcome to 28DL.
As well as the invisible search function:
there are some invisible sticky posts which will help you a LOT
There are also thousands (quite literally) of posts which give basic advice about where to look for help
Read the second of the above stickies first...and as it's so hard to find here is a direct link:
28 Days Later Survival Guide for Newbies. Congratulations! You have stumbled across the wonderful hobby of Urban Exploring and have found yourself standing at the gates of the biggest UK Exploring Forum wondering how to procede. This is quite long but if you are serious about this and want to...
www.28dayslater.co.uk
Have fun and stay safe.