Welcome to adwords community
You can go through our articles sections and read them as a start.
Also see this help section , it has all the information you need to start your 1st campaign
Before you move towards creating campaigns and working on AdWords, I would really encourage you to read this excellent article by Cobnut , which is a real eye opener before you start thinking about AdWords for your business. This is the link: https://www.en.adwords-community.com/t5/User-Articles/Where-to-Start-I-Before-you-begin-with-AdWords...
I must say that you should first build up your knowledge, read help center articles, go through the You Tube Google AdWords channel (https://www.youtube.com/channel/UCgl9rHdm9KojNRWs56QI_hg) and then see if AdWords could really be a cost effective advertising platform for you or not.
Best of Luck!