Vctory:
That is a very tall order!
Do you have a list of words to learn?
I think the best way is to learn related words together. Synonyms and opposites are obvious relationships. Also put words together that are related to a particular subject.
Make sentences about a fun topic using the words you have picked. Put these sentences and words on flash cards and carry them with you. It's best to study in many short sessions. Your brain will get tired after a long study session.
Practice with friends.
You will have to use a word at least 20 times to learn it. Some words will be harder - these I call "devilish words."
Understand your most effective learning style. Some people learn best by hearing or listening, some by seeing, some by doing - like touching and moving. If you do a combination of learning styles, then you will learn faster and better.
So you can sing your sentences or words - fit them to your favorite music. March, walk, jump, or run to your word-music. You can record them and play them back.
When you eat, practice with food and eating words and sentences. You can taste words, too.
Writing is a good way to learn.
You can make dialogues and short plays with words - these are fun to do with friends. Make a big drama, like a soap opera. Write the dialog on flash cards-you can put a different color on the cards for eash part.
If you use flash cards, put them into different boxes - call the boxes "words I know", "words that need a little review", "words that need more review", "words I don't know" and "devilish words" When you learn a word, put its card away in the box it belongs in. Always go back and review the old words to refresh your memory.
If you learn best by listening, go to youtube and try to find fun videos with good speakers who use a good vocabulary. This way you can pick up new words to learn. And you also have the sentences and context.
Some people post youtube videos and ask "what is the person saying at 49-52 seconds?". You can do that if you don't understand the entire video.
There are some good youtube videos on specific vocabulary, for example, this one.
But I think you have too many words as your goal. A very educated university professor in the US has a working vocabulary of about 15,000 words. High school graduates have a vocabulary of less than 10,000 words.
Good luck!
A-
s