i'm an owner of a partnership LLC, incase there are capital contributions from my partner and i, can i use the money directly from the business check.

i'm an owner of a partnership LLC, incase there are capital contributions from my partner and i, can i use the money directly from the business checking account or write my self 4 checks a year. I understand that mixing personal and business related expenses is messy for later on, i won't purchase something useless. Probably food or gas money documented with invoices. What did i miss, I'm a full time student at the moment and i created this business to help me reduce costs on tuition and basic life expenses. What ever is possible to pay off, the LLC has had its organisational meeting and for accounting i have set up quickbooks. I ran out of money once and i used the business checking account card,, which is in my name to pay for the aesthetic appointment and i kept the invoice on quickbooks. Long story short, i want to know my abilities. Read through what i have, if you are interested because i did most of the work for who ever is reading, contact me and be one of my counsellors.