Hi there, and welcome to embroidery!
I hope you enjoy our many educational resources. Join our "machine embroidery novice" membership in your account profile so that we can keep you involved. Also join us on Thursdays in our events section for free live virtual embroidery gatherings with free designs, demonstrations, and specials. https://www.embroidery.com/online_Machine_Embroide... I think the e-book Machine Embroidery in 6 Easy Lessons would be something you'd enjoy as you learn: https://www.embroidery.com/Dime-Machine-Embroidery...
When you're embroidering I suggest you get a good supply of 11/75 sharp needles. You'll probably use these the most. You can also get 11/75 ball point needles.
Since your machine has been in the box for a while, I recommend oiling before use. If there's any dust or threads in it, clean that out before oiling. There may be a manual in the box that can give you instructions for how and when to clean and oil. If not, use this link and skip to page 104. Every other page is in French. If you speak English, you'll just need to skip pages to see all the relevant information. The book doesn't specify a number of stitches or interval for cleaning or oiling, but it suggests that it be done "periodically".
https://manuals.singer.com/Manuals/RetrievePDF/951
Blueeyed monster
I have the Futura xl400 and I am extrememly new to machine embroidery. Is there standard needles that are best for someone learning? Also, how often should I clean and oil my machine? I purchased this brand new in a box but it has been sitting for 5-6 years. I wan to make sure I get the best products to start off on the right foot. So far I am enjoying teaching myself although I often frustrate myself as well. I am anxious to look at what you offer to help someone like myself. Thank you.