Contrib modules should always be put in /sites/all/modules (and NEVER in /modules or they will be lost when doing a core update).
Need to be logged in to website as admin.
Need an FTP client connected to server.
1. Take the site off-line:
http://redhillcc.co.uk/admin/settings/site-maintenance
2. Take a backup of the database:
http://redhillcc.co.uk/admin/content/backup_migrate/export/quick
DO STEPS 3 - 6 FOR EACH MODULE BEING UPDATED
3. Download latest version of module from Drupal website. And untar / unzip.
4. Backup old versions of modules being updated.
4.1 Create a folder e.g. sites/all/2015_01_24_old_modules
4.2 MOVE old version of module from /sites/all/modules to backup folder created previously.
5. Using FTP client, copy new version of module to /sites/all/modules
6. In web browser run /update.php and follow the steps.
REPEAT 3 - 6 for each module.
7. Put the site back on-line:
http://redhillcc.co.uk/admin/settings/site-maintenance