Affiliate Marketing Secrets

First time on Instagram… Don’t want to feel like I don’t have followers on it and very few pics, ya know?
So my twitter account has a couple thousand followers, pics and whatever. So my question is- is there any way I can affiliate/use Instagram WITH my twitter? Thx!!

I’m starting a YouTube channel soon where I plan to do makeup tutorials, beauty product reviews, updates on the latest /best priced items, etc & I wanted to do a “giveaway” (give away FREE nyx makeup) on instagram hoping to get more followers on instagram & promote my youtube page. One of the rules to enter would be to subscribe to me on YouTube & they must be following me on instagram. Then I would choose an end date for the giveaway & randomly choose a winner ! I would pay for the shipping also (giveaway would only be for u.s citizens only, not international)
My question is: is there any laws or regulations about me doing a online giveaway (100% free) using products that aren’t made by me ??? But I did buy them. Would I have to state that the items were purchased in store by me & not supplied by the company ? & that i am not affiliated with them in any way ??? I’m asking just to be on the safe side. I see it done allllllllll the time on instagram but before I do it, I just want to be sure that its legal
Pleaseeeee help !!! 🙁

I’m starting a YouTube channel soon where I plan to do makeup tutorials, beauty product reviews, updates on the latest /best priced items, etc & I wanted to do a “giveaway” (give away FREE nyx makeup) on instagram hoping to get more followers on instagram & promote my youtube page. One of the rules to enter would be to subscribe to me on YouTube & they must be following me on instagram. Then I would choose an end date for the giveaway & randomly choose a winner ! I would pay for the shipping also (giveaway would only be for u.s citizens only, not international)
My question is: is there any laws or regulations about me doing a online giveaway (100% free) using products that aren’t made by me ??? But I did buy them. Would I have to state that the items were purchased in store by me & not supplied by the company ? & that i am not affiliated with them in any way ??? I’m asking just to be on the safe side. I see it done allllllllll the time on instagram but before I do it, I just want to be sure that its legal
Pleaseeeee help !!! 🙁

Back to April 9, 2012, when Facebook announced that it was purchasing Instagram for $1 billion, there was immediately a large scale outcry from seemingly everyone from entrepreneurs to loyal Instagram users. How does an 18 month old startup with 13 employees and zero revenue go for that kind of money?
I’m not here to talk how successful Instagram was, because there are rarely few cases like it. Moreover, I didn’t see much revenues in Instagram until it released a new privacy policy in its Terms of Service last December, which means Instagram can share information about its users with Facebook, as well as other affiliates and advertisers.
Facebook’s vice-president of global marketing solutions Carolyn Everson said: “Eventually we’ll figure out a way to monetise Instagram.”
However, the new privacy policy riled social media users, with one likening it to a “suicide note”. Some of the most powerful users, National Geographic, for example, shut their Instagram accounts down. Coincidentally, Instagram lost almost 25 percent in daily usage over the Christmas after the new policy released.