the main thing you need to know is to believe in one God, Allah.
That he alone is one,
That He is eternal (never created nor can be destroyed)
That he does not bear children, nor was he born
And that there is no one co-equal or comparable to Him.(so there is nothing like him, as everything you see is a creation and He is the creator)
You need to believe that he has sent prophets, and they all carried this same message, adam, noah, moses , jesus (AS) they never claimed divinty for themselves.
You need to believe that the bible, torah and pslams were once perfect revelation sent by Allah, however throughtout time they got changed.But the last and final reveation is the Quran, which is perfect and will remain perfect and unchanged until the day of judgement.
This is most important thing in Islam, before anything, that every human is equal in terms of race, colour, gender except in taqwa(God consciousness) and there is no person between you and God(Allah) . So You believe In Tawheed.
As a women, you can start to learn everything at your own pace such as wearing hijab, but learn your salah (prayers) and understand the main principles of Islam first.
You dont have to be worried, inshallah you will be fine. at the time of the prophet salelahu alayhi wassalam the people who came to Islam were tortured (by the non-muslims) especially the slaves, yet many made it through the torture.
You can email me for any specific questions of queries and i can give you a list of of reliable forum, islamic websites etc.
watch this video and Inshallah it will amaze you, i went to one of his lectures last year as he came to England. He is also a convert to Islam and was a youth minister