The BEST thing you should do is get the Installation Instructions from the MFGR. of your siding. They should be FREE. Each MFGR. has different idiosynchrocies (sp) and MAY not xfer to other MFGRs. This is ESPECIALLY acute when it comes to Warranties!!!
For general info, see How To Install Vinyl Siding. I'm sure your MFGR. has a WEB site, contact info, and/or e-mail and phone numbers. Do yourself the favor.