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.
Paul, London, England: 'I liked your linkbook, the one which links to various language schools. It is more fun to search the net this way, I prefer it over all these endless lists...'
'You can learn by example and learn by direct experience since there are actual limits to the adequacy of verbal instruction.'