Even though tiling is not for the novice a keen eye and a little background knowledge can get you going in no time.
First, make sure your wall or floor is properly waterproofed and inspected should you require approval.
Next step is making sure you have done a tile layout PRIOR to mixing your first batch of glue. If you have access to a Laser Level this will make your job a lot easier, if not you have to work with the stock standard spirit level and tape measure.
Mark your tile pattern on the wall depending on the size tile, this way you will alway have a point to go back to if you end up with a stray tile. Try to lay your pattern out in a way that you end up with minimal cuts around the edges and close to windows or door frames.
Set up a base level at screed hight if you are doing a wall. This can be a piece of timber or similar that the bottom tiles will be able to rest on.
Mix your glue in small batches according to manufacturers instructions before using a screening trowel to evenly distribute. Make sure you only work two or three tile rows at the time depending on the size tile to avoid the glue going off. Always allow the glue to set after a few rows to avoid slippage.
Refer back to your tile pattern often to ensure you're on the right track. It's much easier to fix a mistake if your glue hasn't set before you notice.
Gently rub off any excess glue with a damp rag and let set hard before moving on to the grouting.
Mix the grout according to manufacturers instructions again in smaller batches. Work the grout in using circular movements with a hard foam trowel. Make sure its evenly spread and fills all gaps. Wipe of the excess grout with a wet rag and dry off.