(This series of courses is especially aimed at students with zero basis and no coding basis. The speaker will first teach you how to use some free online databases (GEO, TCGA, oncomine, gepia, ualcan, oncomir, etc.) to find differential molecules that can be studied. At the same time, in the video, the speaker will teach you how to draw some common charts in daily life letters and articles, such as heat map, volcano map, Venn map, etc. Next, the speaker will teach you how to further study the excavated differential molecules, including transcription factor prediction, go annotation, pathway enrichment analysis, protein interaction network analysis, hub gene analysis in interaction network diagram, etc. Screening, co expression analysis and survival prognosis analysis of the screened hub gene.)