Go torrent a copy of the official US army IED handbook and idealy also get the sabotage handbook. Don't ever use the anarchist cookbook wich contain horribly dangerous fuse design.

The one I use in france have been made using a glass bottle and a tampon as a fuse :

Put a very small dose of frying oil in the botom of your bottle, add gasoline. Soak your tampon in gasoline and use it to plug the bottle. Light and throw as fast as possible a soak fuse is quick to burn, the frying oil will vaporize on inpact making it harder for cops to get rid of the heat or cover the fire.

Alternative that I call the KFC ( Kentucky Fried Cop ) that is less ethical, same setup with a glass bottle and a tampon but use a larger dose of frying oil and put polysterene in the botom, use the same amout of gasoline. This one will make an oil mist that stick to clothe and go through cops armor. It's litterally frying people, use it only against people you want to hurt.

BEFORE THROWING IN A PROTEST, TRAIN YOURSELF, you need to be accurate, capable of quickly throwing and backing of. Also coordinate with a local action group, people on your side need to know you are going to throw. ( and always have a atorney number on hand )