Natural Language Processing Techniques

I need help on NLP analysis techniques. I have to receive the code file as well as the doc file that includes the description of each required step with its output.
The required steps are the following:
-Data pre-processing
-Data Annotation (polarity mapping)
-Data Vectorization (CountVectorizer)
-Keywords extraction (TF-IDF)
-Keywords extraction (Word cloud)
-Visualising frequently occurring words (Top ten words via plotting bar plot)
- Topic Modeling using latent Dirichlet allocation (LDA) algorithm
-Thematic analysis

The data will be provided