I agree with everything fredfredgeorge said
If you can get hold of it, read the Baby Led Weaning book by Gill Rapley. It will reassure you that BLW is safe. The main things I got out of it were:
Leave them to it (a lot harder than you think but try!)
Give them a baby fork to play with. Loaded forks are good.
Offer different foods more than once, they may not like it first time but will the next.
If you eat a healthy diet, they will too.
Give them milk before meal times (i think i read an hour before on MN but i just made sure she had bf feed before she sat down) and remember milk is the main source of nutrients before they're one.
Don't worry if you haven't established 3 meals a day; it will come eventually - this was something I worried about initially and there was no need. Sometimes she didn't have lunch, sometimes she did.
Have dc with you when you eat and offer them what you are having (within reason, my dd hasn't had crisps or chocolate
)
Dc might be sick a few times at the beginning if not ready for weaning. We started at 25 weeks and she wasn't quite ready, 10 days later she was! Funny really how they just 'get it'.
Trust that dc will eat what they need, they'll go mad for one sort of food one day and snub it the next. Mine eats lots of protein when teething - assume for energy for all that crying 
Only foods to avoid are honey (not before 1) and choking hazard foods like whole nuts, grapes & cherry toms (cut in half, my dd loves them).
You can read about things to 'be careful' of such as berries, dairy, egg, wheat due to allergies and some people are more cautious about introducing these foods but there are no allergies in our family so dd had everything we had, I think I held off on meat until a few weeks in. Others might have more info on this
I visited dunelm mill as they sell those PVC/plastic sheets by the metre, so we have one on the floor to save my dining room carpet from getting ruined! 
Good luck!