As a witness, u are not required to wear a head covering unless you are conducing a bible study yourself and there are men in the room not qualified to do so.. otherwise it is a personal thing.
Modest dresses can be beautiful depending on materials - ankle length, flowing, short to the knee, boots are a nice look with both - beautiful blouses with out the deep plunge, boat neck, so many lovely materials, lots of jewelry - you dont have to dress like a nun
The broader issue is with many things you wont learn by the bible study. You are searching. and that is a good thing but there are a lot of questions you want to ask every study session.
1) Is Jesus higher than the governing body or do they replace Jesus on earth after Armageddon? Jesus died for the world of mankind that believes in him, the governing body did not.
2)what is the directive on blood transfusions?
2A) Can women hold a position in the organization as a governing body member? Can women give a 1/2 hour talk on the platform- like a man would? What place does a woman have in the organization?
3)What is directive of dealing with family members not in the truth and who are good, kind people? Can you holiday with them?( mostly they want you out in service door to door to get more adherents- its an Amway thing - get more, make more money for society)
4)What is their position on the child abuse issues currently in courts around the world and the society is losing millions of dollars per year with lawyers and trials when the perverts get sentenced to jail?
5)Why the sell off of halls that originally was bought and upgraded by the volunteer publishers who are losing that money and their halls, just to be squeezed into another hall with another congregation?
6) why the constant barrage of money. money to an organization claiming to do worldwide work but really, where the money goes is not accounted for? They report some rebuilding work, but they do not help "worldly People" at all... no clinics, no food banks, no clothing - just money for worldwide work that there is no spending reports made. Lately its been to pay off for the disgusting perverts within the congregations who have lost their cases. The society has kept them in, protected them, never reported them to law. The innocent ones never believed- IN a lot of cases, they and theie families disfellowshipped because they accused a man of child abuse- good old boys club..now they have a voice and the society is paying. Big time. Check it out. Its on the internet. Be wary. Check out the ARC report in 2015-2016 - Australia 0ver 1006 perverts in organization - thousands of children affected - no pervert reported to law- congregations did not know these perverts were in the congregations and could prey on their kids as elders do not announce this - sick!
Research and ask a lot of questions.. You may open the eyes of your study partner
These are just few things you may want to know- do you investigation- this forum can help u with that.. lot of ex-jws, Circuit overseers and elders and bethelites have left the organization due to what they learned when close to the head... they are now called "apostates" yet all they wanted was the society to do the right thing
YOu will be told not to listen to media or read things that go against the society - keep in mind they have hired a PR firm to deal with media to downplay issues arising currently.
Hope this does not spin your head too much -- keep it simple and dont ask questions all at once.. one or two a session would be enough for you to get an idea of what is done