Sugar CapitalStart with the pages nobody markets: terms of use, risk disclosure and the withdrawal policy. A platform comfortable with scrutiny publishes them in full rather than compressing them into three friendly bullet points.
Then look closely at how returns are described. Wording matters: "past performance is not a guide to future results" is a standard disclosure, while a specific monthly percentage presented as an expectation is not.
Finally, test the support channel before depositing, not after. Ask a direct question about withdrawal timing and note how precisely it is answered, that reply is a fair sample of what you'll get when it actually matters.
Reading a statement line by line
A statement is a record of movements, not a verdict. Deposits, withdrawals, positions opened and closed, and any charges each sit on their own line, and the balance at the bottom is simply the sum of everything above it.
The lines worth checking first
The opening and closing balance for the period, and anything you can't immediately explain. One unexplained line is worth an email; a pattern of them is worth a phone call.
Fees kept in plain sight
Anything deducted should show as its own labelled line. A charge that only appears as a smaller balance is a reason to ask questions.
Keeping your own record
Download each statement as it's issued rather than assuming the account stays open indefinitely. A folder with twelve files answers most questions faster than any support queue.
Investing involves risk, including the possible loss of some or all of the capital you put in. The value of investments can fall as well as rise, and you may get back less than you originally invested. Never invest money you cannot afford to lose.