Here I will post links to sites which offer resources on writing specific kinds of texts. For links on general writing and editing skills, see the post below 'Resources on Writing and Editing'.
Memos
For a summary of tips on writing memos see the posts from my latest Effective Written Communication Blog here.
For more on writing memos see this page at Purdue OWL (Online Writing Lab).
Also this page on workplace writing (memos, emails, reports) at the Hong Kong based Centre for Independent Language Learning
Summary Writing
For an interactive introduction to writing summaries see here.
To improve your understanding of skimming, scanning and summarising a text take a look at these pages produced by Monash University in Australia.
Also some quite useful hints on summary here.
CV/Resumes
For my own site on CVs/Resumes, including FAQS and links to other sites, see here.
Job References
If you ever have to write a job reference or testimonial for someone you may find this site useful. Although not well designed, it gives some good tips and examples on what to include in a reference. Also (from a UK point of view) the site gives details of the legal side of employment references.
Letter Writing Conventions
For tips on writing business letters and useful phrases see here.
For more guidance on letter writing conventions in English, French, German and Spanish, see Ask Oxford.
University Entry
For my own site (with Helen Martin) on the Personal Statement for UK university entry see here.