All Oxford version which help you a lot in learning English to improve your skills

1) The Oxford English Dictionary:
Concise Oxford English Dictionary 11 Portable Edition with sound
new edition of the world famous Concise Oxford English Dictionary provides an authoritative description of the English language. Instant access to more than 240,000 words, phrases and definitions, this program is ideal for those who need to date dictionary of modern English on their PC for study, work or home.
2) Students in Oxford Thesaurus Pack - Book and CDRom
Student Thesaurus more than 15,000 words and expressions from written and spoken British and American English with CD-ROM. thesaurus helps students distinguish between the learner such words and use them correctly.The 2000 entries: - include three to ten near synonyms, shows the differences between them in terms of meaning, grammar, register, collocations, and frequency - to help students understand the differences between the familiar words such as easy and simple, while learning expressions they may not know, such as easy, painless and smooth - provide more than 4,000 points, you should be able to distinguish very close synonyms, choose the right word for the context and use it correctly, and - to include more than 2,000 of opposites.
Oxford Thesaurus Learner also includes: - 16 pages of research, focusing on specific topics from the exam-style exercises - an 8-page trainer "on making the best use of the thesaurus and - CD Thesaurus page complete Oxford Learner AZ and indexes, as well as over 200 exercises in practice.
3) Oxford advanced learner dictionary eighth edition
English level:
Upper-Intermediate to Advanced (B1-C2)
Editor: Joanne Turnbull
4) The Oxford English Dictionary: Collection of four main dictionary in 2010

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