When baby first starts to feed themself on finger food or with a spoon there may be an occasion where they choke or seem to choke. Here are some ways to minimise the risk of that happening.
To reduce the risk of choking for first time finger foodies try to keep to these tips:

Don’t force baby to eat if he or she is crying or getting distressed
Make sure that food is soft enough for baby and add small chunks or different textures gradually
Avoid small hard things like raisins, hard sweets, nuts, …

If your baby is choking and has not coughed up the food themself you may need to commence CPR.
To do CPR on a baby remember to use not quite as much force as you do with an adult. All new parents should read up on basic child first aid and should keep a book handy.
If your child is choking:

Give your baby a couple of medium hard pats on the back. See if you can easily disodge the food with your finger but do not try too much as you may …

Many babies will seem to to choke when first starting to eat solids. This is usually just a gag reflex at a new taste or, if some food has got stuck, they will often manage to dislodge it themself by gagging. In some cases you will need to help them out with a firm pat on the back or in rare cases CPR.
You can usually tell straight away if your baby is choking:
 

They will go quiet or make a strangled noise.
They will often have their mouth open and tongue out …