Just a couple of suggestions.
1. First is safety. Do any carb or fuel system related repair outside in the open. Never in the garage or inside. Fuel system fires are more common than you think and it is not worth losing your house for.
2. Always have the proper rated fire extinguisher handy . At the very least, a bucket of water and a few towels will work in a pinch. Leave the towels in the bucket of water and then you can just throw a towel over the engine in case of a fire.
3. Never spray anything that is flammable on a running engine. This is inviting a disaster. A spray bottle with water will work just as well. You are , looking for a vacuum leak and water will do just as well. If you had a leak, the water would cause the rpms to go down. Same effect as carb spray that makes the rpms go up. Just looking for a change.
4. Do as suggested above and download the proper Factory Service Manual for your car. It has all the basic information on all aspects of maintaining your car. It has sections for Basic maintenance, fuel systems, engines, brakes, suspension, exhaust, body, etc...
Read the section that applies to your question completely. Read it again, each time you do you will retain a little more of it.
5. Have a clean , organized work area. Have the tools that you will need handy. Have a helper with you or safety and assistance. 4 eyes and hands are better than 2.
6. Always buy the best quality parts you can find. Quality makes a difference.