packages

Hello,

I have developed my website using Modx but , it is my first experience with modx.Therefore, I would like to ask some questions
I would to ask:
1) what are the best packages for Contact form , register & login forms(website membership) and where members can post view and delete their items .

2) if I type www.mydomain.com it shows me an error that the page requested not found but if I type mydomain.com it works fine.

thank you for your help

1. I use FormIt, Login, and NewsPublisher for those.
https://rtfm.modx.com/extras/revo/formit/formit.tutorials-and-examples/formit.examples.simple-contact-page
https://rtfm.modx.com/extras/revo/login/login.tutorials/login.request-membership
http://bobsguides.com/newspublisher-tutorial.html

2. This is probably an issue with your DNS settings, you need to have a CNAME record for www as well as the main A record for the bare domain. I usually have rewrite rules (.htaccess for Apache web servers) to rewrite any request to www.domain.com to just domain.com. The lines are already available in the provided ht.access file, they just need to be uncommented.

You really should force one or the other, since the session is created for the specific domain and MODX won't recognize the same person as being logged in to the other subdomain.

If all you need is a simple Contact form, SPForm is very easy to set up and is quite spam-proof. If you need a more complex contact form, use FormIt.