Tutors are expensive. If you need to hire a tutor, it may take you hundreds of Hong Kong dollars for an hour. Whether you are a parent, a teenage student or an adult learner, you may be looking for cheap or free solutions online for making your English better.
http://www.wordreference.com/ provides an interface for translating dictionaries between English, Russian, Spanish and German. http://translate.google.com/ even provides more languages for machine translation. http://www.merriam-webster.com/ offers free English definitions to English words.
If you are looking for a thesaurus, http://www.visualthesaurus.com/ is made with an interesting "thinkmap" interface for you to query on a trial basis.http://www.yourdictionary.com/ freely allows its visitors to type any words for their definitions and synonyms.
My site at http://my.radiier.info/ lets you ask questions on the English language. It is free. You just enter questions. I then respond. This is an interesting experimental use of setting up online learning resources.