-R software. Basic tutorial (https://www.statmethods.net/r-tutorial/index.html). Or python. -data visualization, such as R ‘ggplot’. -Endnote or other reference management software. -Basic statistics: correlation,lm, glm, gam (‘mgcv’), glmm(‘lme4’), gamm(‘mgcv’). Sometimes, maybe structural equation model(R package ‘piecewiseSem’,spss Amos,…) -Network analysis. Some R packages: igraph, bipartite…

to be continued…

C.Y.