Unfortunately, mastering Bioinformatics in just 3 days is not possible as it is a complex field that requires extensive study, practice, and experience. Bioinformatics involves the use of computational techniques to analyze biological data such as DNA, RNA, and protein sequences, as well as large amounts of functional and structural data generated by high-throughput experiments.

Here are some steps to get started in Bioinformatics:

Gain a strong foundation in biology, genetics, and biochemistry.

Learn programming languages such as Python, Perl, and R.

Familiarize yourself with common Bioinformatics tools and databases such as BLAST, GenBank, and NCBI.

Practice analyzing and interpreting data using real-life case studies.

Stay updated with the latest developments and advancements in the field.

In conclusion, Bioinformatics is a vast field that requires dedicated time and effort to master. It is not possible to achieve proficiency in just 3 days, but these steps can help you get started.