What helped for us was a waterproof/wipe clean mat, the IKEA high chair and coveralls. We also got Doddl cutlery as he got bigger.
We half followed the SR Nutrition 30 day plan, particularly for the allergens, and gave him a lot of what we were having. It was mainly veg to start, with egg and peanut butter.
We just let him decide how much he wanted, and soon realised he was ingesting more than we thought because of how quickly his nappies changed.
We just let him go with it, different textures and went big with the finger foods. One tip was that we didn’t wipe his face or hands as he was eating, only once he had finished, as I didn’t want him thinking it was “bad” to be messy.
He’s a fantastic eater now a year on from weaning, eats everything and anything put in front of him, despite navigating a throwing and fussy stage! Just remember that they have fluctuating tastes and appetites, just like us.