Is it OK to use Word resume template?
Yes, it's just fine to use resume templates, if you use them wisely. They aren't as “evil” as some people claim them to be. In fact, sometimes resume templates can be quite helpful.
Should I buy a resume template?
Should you use a resume template? It's certainly a good option for most job seekers who aren't graphic designers or otherwise need to impress hiring managers with a custom resume. Ultimately, resume templates can help you create a more professional-looking document and apply to more jobs more quickly.
How many page should you normally a lot for your application letter?
A cover letter for an academic position should be no longer than two pages, but long enough to show off your accomplishments. Research, teaching, departmental service, and relevant accolades. The typical academic cover letter is usually one and a half to two pages long (or about five to eight paragraphs.)