Past, Present, Future and Conditional are common tenses in any language. Begin learning these forms. Use Vocabulix to memorize the various tenses online and free.
Marcel, Germany: 'You should get a price for your site and there is only one price that would be appropriate: the first price. Practicing with your site online has been great fun for me. Thanks!'
'Each time you learn new things it pushes some old stuff out of your brain.' - Homer Simpson