

Using Arabic-English
dictionaries correctly is a finely honed art. Or science. Or... well
the point is it takes some practice.
I'm sure you know the basics. Words are listed by
their
roots
rather than the strict alphabetical order which we
are accustomed to in English dictionaries.

So if you don't know how the Arabic language is structured (i.e. how
Arabic roots work), good luck trying to
find anything!
Therefore, if you are a complete beginner, forget about dictionaries,
and worry about grammar. Do the course
Basic
Arabic Grammar in the section
Arabic Courses to get
started (you are not required to
know how to use a dictionary for that course).
Once you have learnt enough grammar to understand how Arabic
roots and Arabic morphology works, you will be ready to use an Arabic
dictionary. Now you have to make a decision:
Arabic dictionaries generally cater either for classical or
modern Arabic, but rarely both. The student has to decide which one he
or she wishes to focus on, and then find a dictionary or dictionaries
appropriate to his aims.
If you want to focus solely on Modern Arabic, well good news,
Hans Wehr will cater for all your needs.
On
the other hand, if you're interested in Classical Arabic, then you're
in a Catch 22: using classical Arabic dictionaries requires having a
good level of classical Arabic, and getting to a good level of
classical Arabic requires being able to use classical Arabic
dictionaries.
For more information (and a way out of this dilemma!) see the article
MSA
and Classical Arabic and 'Part 3 - Arabic Dictionaries' of
the article
How to
Learn Arabic in the Section
About
Arabic.
Check out the reviews below of the best known and best
quality dictionaries.