To insert barcode:

Fiirst, choose the barcode type according to the data you want to encode in the data string. Eg. to encode numeric only data, choose UPC or EAN codes, or encode large amout of data, choose 2D barcodes. etc.

Second, choose the platform you want to encode barcodes, .NET App, Java, or report solution, excel or word, etc.

Third, search online for free barcode generator with tutorial and sample codes.

Encode barcodes follow the steps. Hope this helps.