There is not one resume format that works for everyone. There might not even be only one resume format for you and it could benefit you to have multiple formats of your resume available. For example, if you’re applying for a job and you don’t know whether your resume will be submitted through ATS, submit both a chronological resume and use a functional resume for your in person interview.
Once you’ve decided on a resume type, it’s time to start writing your resume. You don’t have to start from scratch. First, review examples of the resume type you’ve selected. Then, choose a template which you can copy and paste into a document, and then fill in with your own work history.