Welcome to the forum! 
You don’t need a “sacrifice”. Use the search on how to do evocation (link on how to make contact like this below) and you can make an offering as part if a specific ritual, if you want to and the ritual calls for it.
No. YOU do a working calling Lucifer to command him to bring wealth. But there are better entities that focus on wealth. Browse the Money & Law category for ideas.
Please do let us have your Introduction HERE [ ← click me! ], which we need per the forum rules and see our posting guidelines in the FAQ.
Points to cover:
- Where are you from? * Do you have any practical experience in magick? * If so, what exactly do you practice and * How long have you practiced? * What are your areas of interest?
The getting started guide with all forum orientation stuff, links to tutorials and popular megathreads are here: GETTING STARTED GUIDE, Rules, Notables, Tutorials and References. The links in that megathread are forum-made tutorials for things like spiritual hygiene, developing your astral senses and avoiding impostors and parasites… When you can be sure you’ll not get attacked by parasites, then try Unofficial Tutorials: First Contact from Sigils to Evocation Collection.
For reference:
The rules are here - please read them.
The posting guidelines are here in the FAQ
The Terms of Service are here