The following sites have some practical tips for creating posters. The box below this has some longer readings from books in our collection on designing as well as presenting posters at conferences.
These next links are examples of poster guidelines from two very large scientific society conferences. If you plan to present your research at a conference in future, it's worth checking these out.
If you want to use elements of UCSD's graphic style, check the Brand Guidelines page to find details on colors, fonts and logos, although there there isn't a poster-specific template.