If your physically capable and reasonably intelligent then have a go yourself by watching youtube tutorials.
If that isn't doable then you need to find yourself a reliable tradesman. I'm not a fan of trying to find people using facebook but am assuming you've asked for recommendations - however, you have to specify "personal recommendations only" otherwise people just plug their brother in laws business. Personal recommendations ensure that they are recommending someone who has carried out work for them and they are vouching for it. Better to ask neighbours and friends if possible.
When you find someone, two small things when dealing with them that they really like are being polite and offering tea. Oh and pay the same day, obviously. Save up your jobs so that you have a whole days work at least so you only have to pay one call out fee.
Finally, when you do get someone, never recommend him to anyone else. 😀The only thing this achieves is to make him more popular, less available to you and more expensive. The only exception to this is to recommend him to someone who has recommended useful people to you, kind of exchanging information. Otherwise, just say you don't know anyone.
Edited to add as you can tell i've finally found a reliable, reasonably priced (not cheap) tradesman after a long time searching and I'm keeping him for myself lol. Actually, thats not true, i've got one friend who always recommends useful people but none of my other friends ever have so they can get stuffed when they ask.