Some exercises that may help

Here you have some exercises to practise with very simple conversations but they could help you to get confident:

• http://www.eltpodcast.com/archive/bc : habitual present; very basic
• http://www.eltpodcast.com/archive/ic : this is the following level; have a look; maybe too high for your real level but if you want to try it (something to do on holidays)

I've also found this link joining grammar and functions, that is, what point of grammar you use in each situation. This could help you to understand grammar and how it works:

• http://www.elt-heaven.com/Functions.html : be careful because some items are not included in our level such as ought to
• http://www.englishgrammarsecrets.com/ : a list of grammar points with exercises