In the short term, you should tweak your resume based on each job you apply to. For example, if one position you’re applying to seems to weigh a certain responsibility or focus over another, you should be sure your resume conveys your expertise in this area. At the same time, you should be updating your resume with your experience as it develops, adding any new skills you’ve learned, courses you’ve taken or awards you won.
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.